Avascular necrosis is a disease that results from the temporary or permanent loss of blood supply to the bone. When blood supply is cut off, the bone tissue dies and the bone collapses. If avascular necrosis happens near a joint, the joint surface may collapse.
This condition may happen in any bone. It most commonly happens in the ends of a long bone. It may affect one bone, several bones at one time, or different bones at different times.
Avascular necrosis may be the result of the following:
Risk factors include:
The following are the most common symptoms of avascular necrosis. However, each person may experience symptoms differently. Symptoms may include:
The symptoms of avascular necrosis may look like other medical conditions or bone problems. Always talk with your healthcare provider for a diagnosis.
Along with a complete medical history and physical exam, you may have one or more of the following tests:
Specific treatment for avascular necrosis will be determined by your healthcare provider based on:
The goal of treatment is to improve functionality and stop further damage to the bone or joint. Treatments are needed to keep joints from breaking down, and may include:
Other treatments may include electrical stimulation and combination therapies to promote bone growth.
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